Pinpoint Test A: P0562

Refer to TRANSMISSION CONTROLS for schematic and connector information.

Normal Operation and Fault Conditions

The GSM requires an operating voltage between 9 and 16 volts. The GSM receives this voltage through a fused circuit from the BCM and has dual ground circuits. Excessive resistance in one or more of these circuits, a discharged battery or an inoperative charging system may result in the GSM setting a DTC.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GSM P0562:00	System Voltage Low: No Sub Type Information	This DTC indicates the GSM supply voltage dropped below 9 volts.

Possible Sources

Battery
Charging system
BCM fuse
Circuit open or shorted
Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
GSM

A1 CHECK ALL MODULES FOR LOW VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, retrieve all continuous memory diagnostic trouble codes (CMDTCs) from all modules.
Are any low voltage diagnostic trouble codes (DTCs) present in other modules?

Yes DIAGNOSE the vehicle charging concern. REFER to: Charging System .

No GO to A2

A2 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Carry out the Battery Condition Test. REFER to: Battery .
Did the battery pass the condition test?

Yes GO to A3

No INSTALL a new battery. REFER to: Battery .

A3 RECHECK THE GSM (GEAR SHIFT MODULE) FOR DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.
- Using a diagnostic scan tool, clear all diagnostic trouble codes (DTCs) from the GSM.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Using a diagnostic scan tool, carry out the GSM self-test.
Is DTC P0562 present?

Yes GO to A4

No The system is operating correctly at this time. The DTC may have set due to a previous low battery voltage condition.

A4 CHECK THE GSM (GEAR SHIFT MODULE) POWER CIRCUIT FOR VOLTAGE

Ignition OFF.

Disconnect GSM C3245.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3245-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage within 1 volt of the recorded battery voltage?

Yes

GO to A5

No	VERIFY BCM fuse F21 (7.5A) is OK. If the fuse is OK, REFER to the OEM WIRING DIAGRAMS to identify and repair the high resistance or open circuit. If the fuse is not OK, REFER to the OEM WIRING DIAGRAMS to identify and repair the short to ground.

A5 CHECK THE GSM (GEAR SHIFT MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3245-9	Courtesy of FORD MOTOR COMPANY	Ground
C3245-18	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances less than 3 ohms?

Yes

GO to A6

No	Verify ground G202 is clean and properly fastened. If OK, REPAIR the open circuit.

A6 CHECK FOR CORRECT GSM (GEAR SHIFT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the GSM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the GSM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK for an applicable TSB, GSB, SSM, or FSA. If a service bulletin exists for this concern, discontinue this test and follow bulletin instructions. If none address this concern, INSTALL a new GSM. REFER to: Gear Shift Module (GSM) .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.